Barrel washing machine



Oct. 18, 1938. c. 1. Scl-IRQEDER 2,133,481 v I BARREL WSHING MACHINE Filed June 30, 1953 l0 Sheets-Sheet l ATTORNEY -iim Y www@ .KRW

oct. 1s, 1938. C, J SCHROEDE'R 2,133,481

BARREL WASHING MACHINE Filed'June 5o, 1933 1o sheets-'sheet 2 f A .52? y 1 V35 .l 39 l wam I Filzen im@ l 'i Imm 4f- 12: siliiil /2 mand- 1m ATTORNEY v 0Ct- 18, 1938- c. J. scHRoEDER 2,133,481

BARREL WASHING MACHINE Filed June 50, '1935 1o sheets-sheet 5 ArroRNEY Oct. 18, 1938. V SCHROEDER 2,133,481

BARREL WASHING MACHINE- V Filed June so, 1953 1o sheets-sheet 4 "iiiii l Q E m i g "s 5 n INVENToR y l ggzllf .Schwede/10 RMQAR m i l ATTORNEY BARREL WASHING MACHINE Filed June 50, 1935 l0 Sheets-SheefI 5 ATTORNEY Oct. 1 8, 1938. c. .1. scHRoEDER 2,133,481

BARREL-WASHING MACHINE Filed June 30, 1935 lO Sheets-Sheet@ INVE NTOR 521-14 2a/@JJM BY MAW ATTOR N E Y OC- 18, 1938- c. J. SCLROEDER 2,133,481

BARREL WASHING MACHINE Filed June 30, 1933 10 Sheets-Sheet 7 INVENTR Ca2/LJ ohzoedep ATTORNEY Oct. 18, 1938. c. .1 scHRoEDER BARREL WASHING MACHINE Filed June 30, 1955 l0 Sheets-Shea?l 8 NVENTOR CczzZJo/woedev BY ArroRNsv OCt- 18, 1938- c. J. scHRoEmu-:R 2,133,481

BARREL WASHING MACHINE Filed June 3o, 1935 1o sheets-sheet 9 v Ll- INVENTOR ATTORNEY Oct. 18,1938.

c. .J. SCHROEDER 2,133,481

BARREL WASHINGv MACHINE Filed'June 3o', 1935 V ATTORNEY l0 Sheets-Sheet lO Patented Oct. 18, 1.938

uNrrED-sTATEs BARREL wAsnNG MACHINE cui J. schroeder, Hobart, rnd.; signor ai Standard Oil Company, Chicago, Ill., a corporation of Indiana Application June 30, 1933, Serial No. 678,38'1

11 Claims.

My invention relates to improvements in automatic barrel washing machines. y

An object of my invention is to -provide an automatic barrel washing machine wherein a plurality oi' barrels may be progressively conveyed in groups through a series'oi' stages, eachv stage providing a separate function in the com-` i plete barrel washing and rinsing operation.

Anotherobject is to provide an automatic barrel washing machine wherein all the stages are simultaneouslyoperated, each treating the group of barrels conveyed thereto from the next preceding stage.

A further object is .to provide, in an'automatic barrel washing machine, mechanism for simultaneously moving the entire 4entrainment of barrels barrel washing machine wherein the introducvtion of the internal barrel spraying nozzles `'into the barrels may not take place until after movement .of the barrels by the conveyor has ceased. A still further object is to provide -a novel vinternal spraying nozzle of the swing pipe type,

for uniformly distributing washing solution or rinsing water to the interior walls of the barrel. Other objects, .the advantages, rand uses oi the invention will become apparent Aafter reading the following speclcations and claims, and after consideration of the drawings forming a part of this specification wherein:

Fig. 1 is a schematic top plan view cian automatic barrel washing machine constructed in accordance with my invention;

lFig'. 2 is a schematic illustrated in Fig. 1;- l

Fig. 3 is a chart representing a complete cycle of operation of the barrel washing machine;

g. 4 is a ow diagram oi.' the preheating, washing and rinsing -ulds employed;

Fig. 5 is a diagrammatic'view illustrating the electrical and hydraulic control circuits and flow lines employed in the barrel washing machine;

Fig. 6 is atop plan view of the conveyor chain grip;

section of the mechanism Fig. 7 is a sectional view along the line VII-VII of Fig. 6;

Fig. 8 is a sectional 'view along the line VIII-VIII of Fig. 6;

Fig.v9 is a fragmentary top plan view o i a part of the mechanism illustrated in Fig. '7;

Fig. 10 is a fragmentary top plan view of the retardation mechanism for the 'chain grip;

Fig. 11 is a sectional view along the line Xi-XI of Fig. 10;

Fig. 12 is a sectional view XII-XII of Fig. 11;

Fig. 13 is a vertical sectional view substantiallyy along ,the line XIII-XIII of Fig. 2;

Fig. 14 is a view partly in elevation, and partly in section, of one of the swing pipe nozzles;`

Fig-."15 is atop plan view o! the nozzle of, Fig. 14;

Fig. 16 is a sectional view along the 'line XVI-XVI of Fig. 14;

Fig. 17 is a top plan view of the swing pipe nozzle spraying mechanism ofstage BV;

Fig. 18 is a sectional view along the line XVIII-XVIII of Fig. 1'7; n

Fig. 19 is a vertical elevation of'the automatic switch mechanism employed for controlling conveyor chain movement and movement of the swing pipe nozzles;

Fig. 20 is a top plan view of the switch mechlanism of Fig. 19; i

Fig. 21 is a sectional view along the line XXI-XXI of Fig. 20;

Fig. 22 is a vertical sectional view through the switch housing of Fig. 19;

Fig. 23 is a sectional view along the l line XXIII-XXIII oi Fig.22;

Fig. 24 is a sectional view through the conveyor mechanism illustratingk the operating means for the carriage speed control switch;

Fig. 25 is a horizontal sectional view through the conveyor housing illustrating the `control Amechanism for the carriage limit switch,

(Fig. 26 is a diagrammatic view oi a modiiled form of the carriage and nozzle operating mechanism operated entirely by hydraulic means, and

Fig. 27 is a fragmentary diagrammatic view of the pressure control mechanism forl the hydraulically operated conveyor pump.

I have selected for illustration (Figs. 1 to 25 inclusive) an automatic'barrel washing machine 50 wherein the controlling and the synchronizing of the barrel conveyor mechanism and of the rising and receding of the swing pipe spray nozzles is accomplished by means of a comparatively simple electrical circuit. and in Fig. 26 in sche- 55 along the line matic view, I have illustrated .a modified form of the washing machine wherein the automatic control and synchronization of the various moving parts, of the machine is accomplished by hydraulic means. In both embodiments of the invention the movement of the barrel conveyor chain is carried out by hydraulic driving means. With reference to Figures 1 and 2, the barrels BB are carried through the washing machine upon an endless conveyor chain I0 supported at its opposite ends upon idler drums one of which is shown at I|. 'I'he conveyor chain I0 passes through an elongated metal housing I2 within which preheating, washing and rinsing nozzles are located. During the complete washing and rinsing operations the barrels pass in groups of four successively through `eight separate stages, six of the stages, 2 to 1, inclusive, (see Fig. 2) being located within the housing I2. Stage I at the forward end of the housing, is set apart for the loading of the barrels BB upon the chain. This may be done by manual labor or by automatic means (not shown). Stage 8, located beyond the rearward end of the housing I2, is set apart for the unloading of the barrels from the chain for dehydration or any desired usage or disposal. 'I'he movement of the barrel through the successive stages is in the direction of the arrow I3.

Functions of the successive stages Stage l-Loading of barrels upon the conveyor chain. j

Stage 2-Barrels are sprayed through spray nozzles I4 with water at approximately F., previously pumped from the rinsing reservoir of stage 6 as will be hereinafter de through spray nozzles l5 and internally through swing pipe nozzles l1 with a hot caustic solution at substantially F. and at apressure of from 80 to 125 lbs, per square inch. Excess, caustic solution may flow back. into the reservoir I8.

Stage 5-The caustic solution from the inside and outside of the barrels is permitted to flow back into the reservoir I8 of stage 4.

Stage I-The barrels are rinsed externally through nozzles I9 and internally through swing pipe nozzles 20 with hot ltered water at 185 F. and at a pressure of from 80 to 125 lbs. per square inch. The excess rinse water may ow into the reservoir 2| where a part of it may be/'pumped, as will be hereinafter described, into the preheating reservoir I5 of stage 2. Pure nltered water is admitted to stage 6 through the swing pipe nozzles 20 for internal washing of the barrels, the water employed for the nozzles I9 being water from the reservoir J2| Stage 1-The` hot rinse water is permitted to drain back into the reservoir 2|.

Stage B-Unloading for dehydration, etc.

A better understanding of the handling of the preheating, washing and rinsing solutions may be had from a study of the flow diagram of Fig. 4 wherein it may be seen that the preheating water of stage 2 isconducted to the reservoir I5 externally from the reservoir 2| offstage 6 through a pump 25 and interconnecting pipe 26. The water for the nozzles I4 is withdrawn from the reservoir I5 by a pump 21. Inasmuch as water is being constantly conducted-to the reservoir I5 from the rinse water reservoir 2| a part of the old water of the reservoir I5 may be removed by a pump 28 through a heatvexchange device 29 and thereafter conducted to a settling box 30 having its outlet 3| in'communication with the sewer. 'Ihis method of handling the used preheating wa,- ter is employed as an aid in heating the ltered water for stage 6. Rinsing water obtained from a supply pipe 33 is passed through filters 34 through the heat exchanger 29 into a heating tank 35 having a steam heating coil 36 where it 4is heated to the proper temperature forA the rinseand is thereupon pumped directly to the swing pipe nozzles 20 throughthemedium of va pump 31 actuated, as will be hereinafter de-` scribed, only during the entry of the nozzles within the barrels. A pump 38 is employed for withdrawing rinsing water from the reservoir 2| for the rinsing nozzles I 9.

The caustic solution for stage 4 is provided by admitting concentrated caustic solution from a tank 4| into a water feed pipe 42, carrying Water which has been previously heated to the required temperature by a steam heating coil 43 in a heating tank 44. The caustic washing solution so formed is admitted directly to the reservoir I8 of stage 4 where it may be pumped by a pump 45 to the external spray nozzles I6 and 4swing pipe nozzles I1.

'I'he reservoirs I5, I8 and 2| are each connected through shut-off valves V with a pump 41 whereby the sedimentary water or solution from the bottoms of the reservoirs may be pumped directly into the settling box 30 when desired.

Conveyor chain operating mechanism With reference particularly to Figs. 2 and 6 to 12, inclusive, the conveyor chain l0 comprises a plurality of pairs of parallel links 5| having pivotal connection with the next adjacent pairsand provided with flanged wheels 52 at their points of interconnection adapted to ride upon horizon- VAtally disposed rails 53 extending the full length of :the conveyor between the idler drums 'I'he lower part of the conveyor chain is permitted to For this purpose the conveyor chain grip illus-` trated in Figs. 6 to '12 is provided. The chain grip is constructed after the fashion of a carriage and consists of fa pair ofg channels 56 with their backs facing one another and spaced apart by sleeves 51. Wheels 58 are provided at the outer sides of the fchannels 55 and arranged to ride upon the lowerflanges 59 of a pair of opposed channel irons 6| forming a track along which the chain grip may move.

An hydraulicallyA operated piston B3, operating in an elongated cylinder 64, is employed to move the chain grip a distance substantially equal to one stage length and to draw the grip in the direction of the arrow I3 (Fig. 2), together .with the stage length. The piston 6I iscoupled to the chain ygrip through a lost motion connection c omprising a rod 65 fixed to the piston and extending forwardly through a collar 68 fixed between the channels 56 of the chain grip and Isecured by threaded engagement 61 to `a block 68v slidably supported between the channels 56. When the piston is drawn inwardly ofthe cylinder 64 during the advanceof the conveyor chain I0 as de" scribed the block 68 may abut the collar 86 to providel a positive draft connection. VWhen the piston 63 is moved inwardly of cylinder the block 68 will advance relative 7to the collar 86 and to the channels 56 and in so doing will cause a driving dog 69, pivotally mounted at 1 I between the channels 56, to rise-upwardly in the path of the conveyor chain so that its outer end lies in the plane of the adjacent spacer sleeve 12 between the pairs of -chain links 5I. This elevation of the dog 69 is caused by the presence of a relatively short link 13 having pivotal connection at 14 .with the outer end 'of the dog 69 and at 15 with the block 68. In Fig. '7 I have illustrated the posi- `tion of the dog 69 as it appears duringl the movement of the conveyor` chain by the `hydraulic piston 63 and in dotted line the dog 69 is shown as it appears .during the return movement of the chain grip in the direction of the loading stage of the machine.

Fig. 7 further representsthe chain grip as it appears at the end4 of its draft movement wherein y' g the conveyor chain stop 8|, pivotally mounted at '82 .upon the support 88 provided for on the forward end of the cylinder 66, is illustrated in its chain engaging position. The stop 8| normally lies in the position shown in dotted lines in Fig. 7.. It isl formed at its outer end with a stirrup 84 which embraces the outer side walls of the channels 56. As shown in Fig. 8, cam members 85 and 86 secured to the outer rwalls of the channels 56 form an inclined guideway 81 within which rollers 88 rotatably mounted on the inner 'and opposed walls of the stirrup 84 may at times ride. The

- path of the chain stop 8| is caused to rise to the position '5, .shown in full lines in Figs. '1 and 8 when the chain grip has completed its function of advancing the conveyor chain and will falldownwardly to its dotted line position when the chain gripv isurged away from the cylinder 64 during its return stroke. Astop in the form of a Lbar 89 may be provided" to arrest the return movement of the chain stop 8| guideways 81 when the chain grip next completes its chain draft movement.

In order that the chain grip may not start on its return movement .prior to the lowering of the dog ss tothe dotted une position er 1013.7 a laten 9| is pivotally mounted at 92 between the channels 56 and beneath the dog 69. The latch is so balanced upon its axis of rotation that it will tend to assume the position shown in Fig. 'I with its forward end disposed in the path of a stationary stop member 98. Return movement of the chain grip is therefore precluded by the abutment of thelatch 9| against the stop 98 until such time as the dog69 is lowered through the instrumentality of the link 18 and the lost motion con- In Figs. 10 and 12 Ihave illustrated mechanism for retarding the vchain grip sov that the piston 68 may move relative to the chain grip and thus assure the lelevation of-the iog 89 to the position shown in Fig. 'I prior to the advance 'ofthe chain grip, the purpose being to effectI 'seen in Fig. 13 the conveyor chain I0 is located so` that the rollers 88 will lie in thev betweenthe piston 88 andjthe chain grip.

, 3 a positive driving engageme t between the chain grip and a spacer sleeve 1'` of thechain. This mechanism consistsof a tongue 95 fixed at the forward end of the chain grip between the channels 56 and is formed with a wedge-shaped en- 5- -larged` head- 96. ,Thetongue 95 is adapted lto enter between a pair of rollers 91 mounted upon a pair of frames-98 respectively. Each of the frames 96 'is pivotally mounted at 99 upon a stationary supporting assembly IOI. A pair of 10 compression springs I02 are employed to draw.a the frames 98 toward one another and hence the rollers 91 into close engagement with the tongue 95. The springs are so adjusted as to yield to the spreading vof the frames 98 under 15 the influence of forces ,arising by the introduction of the head.,96 therebetween at end of the return movement of the chain grip, but are -of sufiicient strength to retard reverse movement of the chain "grip until the lost motion between 20' gage with lthe spacer sleeve.' or tube 12 of the 25 adjacent chain link to drnaw the chain supportingthe barrels BB with the grip on its draft stroke. The mechanism for controlling the hydraulic piston 68 will be hereinafter described: Barrel interior wash and spray mechanism n1 Figs. 13 te 1s, inclusive-1 have illustrated v the mechanism for,spraying the interior of the barrels, with caustic solution inl stage 4, 'and e with hot rinse water in stage 6. The construction of the swing pipe nozzles and nozzle operating means for the two stages is identical with the exception of slight differences in the fluid y connections as has been previously explained j under "Functions of the successive stages.' The 40 mechanism employedin stage 6 has been selected for illustration because of the inclusion therein of a switch mechanism for controlling the crank shaftv and the hydraulic piston 68. As may be in' spline substantially 10 fremnorizontel and the housing I2 is similarly canted. 'Ihis positioning of the conveyor chain and vhousing i2 fulfills a three-fold purpose.` First, that Iof tilting the barrels BB so that the washingsolutions and rinsing vwater rmay drain throughv the `bungholes |05 of the barrels into the housing rI2 and'from the housing into the adjacent reservoirs I5, I8 or 2| depending upon ,the stage location of the barrels. Secondly, the tilting lof the conveyor chain and barrels BB more readily permits of. the introduction of .the swing pipe nozzle assemblies I1 or 20 within the barrels by effecting a lowering of the center about which the swing pipe nozzles are mounted, and thirdly,

more adequate draining of the concave top of the barrels. f j

` As may be seen the stationary nozzles represented at I9 and I9A in Fig. 13'fr stage 6 are located in such a position within the housing-35I I2 as to distribute a sprayof fluid over the exterior of the barrels with substantial unigformity. The distributing heads .|08 yof the s wingpipe nozzles are located at the outermost ends of the arcuate swing pipes |01, there being one pipe for each barrel on the stage. I have illustrated the stages as having a capacity of four vbarrels each and hence four of the swing pipes |01 are shown for each of the two stages.v The pipes |01 are connected to a U-shaped feed pipe |08 75 Fig. 17) so that the nozzles may be swung from a position below the barrels through the barrel bung-holes |05, and up to the dotted line posi' tion shown in`Fig. 13.

'I'he driving means for swinging the nozzles into the barrels and withdrawing the nozzles therefrom comprises a drive. shaft II5 extending from one end of the machine adjacent to the unloading stage to stage 4 (see Fig. ,1). The

drive shaft is arranged to'rotate crank shafts I I6 through the medium of intermeshingl pinions; I|1 and gears II8 located upon the drive shaft II5 and crank shafts ||6 respectively.` Each of the crank shafts IIB is provided with crank arms |I9 at its opposite ends. 'I'he outer ends of the crank arms IIS are connected, by connecting rods I2I, to the legs of the U-shaped Jsupply pipes I|J8 so that one complete revolution of the crank shafts IIS will cause the swing nozzles to move from the position shown in full lines in Fig. 13 to the position shown in dotted lines and return. This portion of the cycle of` operation of the machine is represented by the angle |22 in the chart shown in Fig. 3 wherein the time during which the nozzles are in operation is arbi-- trarily fixed as three-fourths of the time required to carry out a complete cycle of operation of the entire barrel washing machine.

In order that the swing pipe nozzles may enter the barrels without difficulty, funnel shapedguide members |25 xed to the conveyor chain I0 are provided, one for each barrel. The guides |25 may be further used in locating the barrels upon the conveyor chain during the loading operation at stage I. Tubular guide members |26, fixed to the housing I2, serve to maintain registration between thevswing nozzles and the guides. |25.

With reference to Figs. 14 to 16 I have illustrated a nozzle or fluid distributing head particularly adapted for use -with swing nozzles of the type designed to enter the barrels through bung-holes near the side walls of the barrels and to be moved through the path illustrated in Fig. 13. It will be noted that the nozzle head` is divided into three zones, |21, |28 and |29 and that the zones eachhave passageways I3I extending through their side walls and communicating with the inner bore ,|32 of the nozzle.

The passageways I3I are so distributed as to divide the major discharge of fluid throughout an angular range of about the vertical axis of the head, Athis portion of the nozzle being turned toward the remote half of lthe barrel irite'rior. 'I'here are but three of the passageways I3I extending toward the'adjacent side wall of the barrel and one which is upon the vertical axis of the nozzle. I have y,thus provided a spray nozzle which when moved substantially longitudinally along one portion of the inner wall 'of a lcylindrical barrel will distribute id substantially over the entire interior walls of the barrel so that all regions thereof may be adequately `washed or rinsed. In Fig. 14 I have 'designated the angular disposition of the zones |28 and |29 with respect to the axis of the nozzle. y

Automatic control of swing pipe nozzles and conveyor chain 9,183,481 -pivotally mounted at its opposite ends |05 (see The motor L is intended `for continuous operation at Yall ytimes during the functioning of the barrel washing machine and the speed of the motor is controlled by a rheostat |42. The shaft I I5, however, and the driven crank shafts I I6 will 5 rotate only so long as the magnetic clutch K is energized. The clutch K is controlled by a springloaded switch C which is actuated together with a spring-loaded switch D by an arm |44Vnormal1y lying in the path of a cam |45l fixed to the crank l0 shaft IIS of stage 6. In Fig. 5 the arm |44 is f shown as shifted out of the path of the cam |45 against the force of a compression spring |45 `of their one revolutionv cycle during time the swing nozzles will be elevated into the barrels and will thereafter return to the position shown in Fig. 5. The limit switch G located near the'25 cylinder 64 is closed at this time by virtue of the fact that. the chain grip is at the end of its draft stroke and has caused a bell crank |41 to swing upon its center |48 to depress the switch actuating push rod |49. Energization of the sole- 30 noid M by the closing of the switch Gv hasfcaused the solenoid plunger I5| to move from its dotted line position to its full line position to shift the arm' |44 out of the path of the cam |45 as previously described. Details of the solenoid M and 35 the switches C and D are shown in Figs. 19 to 22, inclusive.

It should be noted that the switches C and D are both operable by rotative movement of aP shaft |53 to which the arm |44 is xed and are so 40 arranged as to cause the switch C to open slightly in advance of the closing of switchHD when the arm |44 is raised againstthe spring loading of the switches as by operation of the cam I 45. This adjustment of the switches may be effected either by 45 shifting the switch operating fingers |54 relative to the shaft |52 or by adjustment of the. buttons |55 engageable with the switch arms |56. Both of the switches C'and D may be enclosed 1 within a casing |51 and submerged in oil. 'I'his 50 is of particular importance where the barrel washing machine is to be employed in an oil refinery and itis contemplated that for such use all of the switches included in the diagram of Fig. 5 shall be so protected. 55

'Ihe solenoid M, the switches C and'D in the housing |51, and the switch operating arm |44 are mounted in unitary assembly upon an upright |58 along side of the crank shafts IIB on stage 5. vThe travel of the arm |44 laterally from a posi- 60 tion where it is engageable by the cam |45 to a position out of the path of thecam is best shown Lin Fig. 20.

In Fig. 25 I have shown the limit switch G,

and its operating mechanism with relation to 65v the chain grip and housing I2.

Referring again to Fig. 5, the 'relative position of the apparatus illustrated therein represents the solenoid coil of a solenoid operated valve I and since the solenoid coil of the valve is deenergized the valvevmember ISI will lie in the posh/75 spring |62 acting to retract the solenoid plunger |63. With the valve |6| in the position shown in Fig. oil under pressure from an oil pump P driven by an electric motor J, in constant operation during the functioning of the barrel washer,

may pass through the valve by way of oil conducting pipes |65, |66 and |61 and into the rearward end of the vlcylinder 64 to urge the piston 63' toward its dotted line position. The oil from in front of the piston 63 returns through the valve to the inlet side of the pump through pipes |68 and |63.

It will be noted that a constriction in the pres-4 sure feed pipe |65 between the outlet side of the vadapted when the solenoid coil is energized to lie in open position. The solenoid coil of the valve H is connected in series with the power line and ay pair of limit switches E and F whichare normally closed and which when either are opened will serve tode-energize the solenoid coil of the valve H to close the valve and therefore the bypass |12. The switches E and F are located adjacent to the opposite ends of travel of .the conveyor chain grip exteriorly of the housing I2 as shown in Fig. 24. Each has a laterally extending shaft |15 provided with an arm |16 and roller |11 at the outer end of the arm so arranged in the path ,of the chain grip that when the grip approaches either of its limits of travel the adjacent of the switches E or F willopen to de-energize the coil of the solenoid valve H and close the bypass |12 to reduce the rate of flow of oil to the grip operating hydraulic piston 63 thereby deceleratingl the rate of travel of the chain grip. The provision of .this feature in my improved barrel washing machine permits of a relatively high rate of travel of the conveyor chain during the major part of its movement without the danger of damage tothe machine through stopping the chain too abruptly as would probably occur without automatic deceleration near the limits of chain grip travel. vent damage vto-the chain grip at the time of its engagement with the retardation mechanism -illustrated in Figs. 10 to 12.

With reference to Fig. 3'the return movement nates with the time interval during' which crank shaft movement takes place as governed by the operation of the magnetic clutch K and switch C.

Referring again to Eig. 5, a single control switch AA may be employed.- if desired, to simul- 4taneously set in operation all portions of the electrical control circuit and for the purpose of safety a pair of switches B may be employed in series with the control circuit of the magnetic clutch K, one switch being located at each end of the washing machine in a convenient posi- The limit switch 'E serves chiefly to pre-y tion so that the. operatormay at any time open either of the switches B to cause further movement of the swing pipe nozzles to cease. As 'an additional safeguard a pair of switches A may be employed in series with the circuit controlling the pump motor J so that when either of the 'switches A are opened further operation of the This latter feature is'of l carriage may cease. particular importance should any of the barrels become out of place while the chain is travelling through the housingl I2. 'I'he switches A are preferably located adjacent to the switches B.

From the position shown in Fig. 5 the chain grip will advance to its dotted line position where it may remain throughout that portion of the cycle of operation represented at 11 in Fig. 3. Asv soon as the chain grip has moved out ofengagement with the bell crank I 41, the limit switch G will open and the solenoid M will become deenergized and caused to assume its dotted line position. At this time thecam will be sufficiently out of range of the arm |44 to permit the arm to shift to the left under the influence of the spring |46. When the crank shaft ||6 has completed one revolution accompanied by the introduction of the spray nozzles in the barrels on stages 4 and 6 as heretofore described the cam |45 will again engage with the arm |44 to lift the arm thus opening the switch C to de-energize the clutch K and stop further rotation of the crank shaft and to close the switch D' causing the solenoid operated valve I to reverse its position and conduct oil'from the pressure side of the pump drive shaft ||5and crank shaft 6 will remain stationary until the draft movement of the conveyor chain is completed and the chain grip through the instrumentality of the bell crank |41 has closed the switch G to energize the solenoid M thus sluiting the arm |44 off of the cam |45 to reverse the position of the switches C and D thereby reestablishing the/relative positions of the parts and circuits as-shown in Fig. 5 preparatory to the next succecding cycle of opera- Inasmuch as the filtration of water for washin g large numbers of barrels represents a considerable expense when carried out on a large scale as in a barrel washing machine as herein described, I have provided a switch |8 connected in series with the motor |82 of the pump I 31 through a circuit |83 in series with the power line PL which is adapted to be closed through the instrumentality of a switch operating arm |84 actuated by cam |85 located on the crank shaft ||6 of the stage 6 (see Fig. 5). The cam |85 functions to maintain the switch |8|' closed Hydraulic grip carriage and nozzle operating mechanism f In Fig 26 1 lhave illustrated vmother embodi-v ment of the conveyor grip carriage and spray ynozzle operating and control mechanism.

The operation and function thereof is analogous to that of the mechanism illustrated in Fig. 5 but differs in that the electrical circuits, switches and electrical apparatus are replaced by hydraulic circuits, valves and hydraulically operated mechanisui.l

carrying the two pairs of crank` arms ||9, assoelated with vspray nozzles l1 and 20 respectively.

'I'he crank shaftiiia may be operated by a hy-v draulic motor CR including a piston |88 having a rack |89 fixed thereto engageable with a pinion |81 on the crank shaft. A ratio between pinion, rack and pistonstroke is established such as to cause the crank shaft ||6a to rotate 180 `during a complete stroke, in either direction of the motor piston |88.

Fluid under pressure for operating the motor CR may be provided by a pump P2, driven with the pump Pi, by the electric motor J. A valve NV serves to control the motor CR.- and hence the rise and fall of the internalvspray nozzles I1 and 20 (Fig. 13).

'I'he control valves NV and CV- are responsive j in operation to fluid pressure from a small gear pump unit PV which may be built intoA the pump Pi. A mechanically operated valve MV is employed for controlling, in part, the operation of the valves`NV and CV. The valve MV may be of the type wherein the valve member is normally urged to one limit of its movement by a spring |89 engaging with the stem |90 of the valve. An

ranged asto depress the valve stem |90 against the force of the spring |89 when the crank shaftv I'Ia ls in a position to locate the internal spray nozzles I1 and 20 in their lowermost positions, as shown in full lines in Fig. 13. y

The valve NV is provided with a valve stem |92 which may extend parallel with the crank shaft ||5a at a short distance therefrom and y which is -normally under the lnuence of a compression spring |93 vtending to urge' the valve through its stem |92 to the opposite end of its travel from that position in which the valve is illustrated. A flanged collar |94 fixed upon the valve stem |92 and engageable with a latch |95 pivotally mounted at |95a relative to the valve NV, serves at times to retain the valve in the position shown in Fig. 26 against the force of the spring |99. When the arm |9| upon the crank shaft ||5a is moved to the dotted line position as'during elevation of the spray nozzles |1 and 20- the latch |95 will be released from engagement with the collar |94 by the pressure of the arm against the latch to cause' the valve-v NV to shift under force of the spring |92 and v,thereupon reverse the flow of fluid under pressure from the pump P2 into crank shaft fluid motor CR.

(The control of iluid under pressure from the pump PV into the area |96 of the valve NV.and into the operating cylinders |91 and |98 of the valve CV is` carried out by the mechanically operated valve MV.

The apparatus, as illustrated in Fig. 26, repreagainst the y.force of the spring |93, thereby causing the latch I to engage with thecollar- |94 and retain the valve in the position shown. For

this purpose the collar engaging portion of the latch |95, at that side facing the valve NV, may be rounded, as shown, bso that the outermost flange of thev collar |94 will lift the latch in its zles |1 and 20 into the barrels BB on the con veyor I0.

As soon as the crank shaft ||5a has completed a movement thus bringing the nozzles |1 -and 20 to the limit of their travel inthe barrels BB, the arm |9| having arrived at its dotted line position, will release the latch |95 from engagement with the collar |94 and the spring |93 will cause the valve NV to shift from its full line position to theopposite end of its travel thereby reversing the flow of fluid under pressure from the pump P2 to the crank shaft fluid motor CR. The crank shaft ||6a will thereupon reverse its movement thus to lower the nozzles out of the barrels. With the arm |9| moved away from the stem I 90 and in the dotted line position shown in Fig. 26, the'spring |89 will force the stem |90 outwardly to move the valve MV to a position opposite to that shown in Fig. 26. With the valve MVin this position, fluid from a. pump PV will pass through the valve MV and enter the cylinderA |91 of the valve CV and thereby move the element 204 to the right in the position opposite' to that shown in Fig. 26. With the valve element 204 in the last named position, :fluid from the pump PI will pass through the valve CV and enter the forward end of the cylinder 04 and force the piston 6,3 rearward moving the chain grip to the dotted line position shown in Fig. 26. Upon arrival of the nozzles at the lowermost position of their'travel the nozzles will lie entirely out of alignment with the moving elements of the conveyor mechanism,.at which time the arm |9| acting upon the valve stem |90 of the valve MV will cause the valve again to assume the position shown in full lines. This position of the valve MV will cause fluid under pressure from the pump PV to be conducted to the cylinder |98v of the valve CV thereby to shift the valve to the position shown and admit fluid under pressure from pumpPl rearwardly of piston 03 so that the conveyor chain andthe barrels BB supported thereupon may be drawn forwardly by engagement of the grip carriage therewith in the manner heretofore described whereupon the apparatus is in readiness a group of the barrelsBB toadvance one stage lengthAthrough the barrel `washing apparatus within the housing |2f.'

In the hydraulic embodiment of the operating and controlv mechanism the grip carriage may be provided with a pair of cams 205, one at" each end ofthe carriage engageable with camwheels 201,-carried by push rods 208, located near the remote ends of the path of movement of the grip carriage. The push rods 208 may be each engageable with a bell crank 209, each bell crank having an arm 2|0 in registration with collars 2| fixed to a rod 2|2 extending along the path of travel of the grip carriage and connected at one end with a plunger valve 2| 3. The plunger ,valve 2H when moved to the positionshown in pressure control mechanism 2H. This mecha-V partially within said bung holes when the barrels full lines, as by engagement of the' cam 206 with the cam roller 201, acts to cut-off fluid under pressure from the pump PV into a pressure operated control mechanism 2M- of t the pump Pi which functions to decrease the fluid pressure at The grip proaching the limit'oi-its s troke in either direction, in substantially the same'manner as occurs in Fig. 5 through the instrumentality of the switches E and F and the by-pass solenoid operated valve H.

In Fig. 27 I have illustrated one form ofthe' nism may comprise a by-pass valve 2li having a movable valve member 2I8 which when urged from the position shown inwardly of the cylin- J drical chamber 2I1 against the force of spring `2I8 serves to shut olf by-pass communication between the outlet and inlet pipes 2I9 and 22| of the pump P I. The valve member 2 I 6 is caused to move inwardly during normal operation of ,the conveyor operating mechanism 63-84 by uid under pressure admitted to the cylinder 222 through the pipe 223 communicating with the valve 2l3 through themedium of a piston 224 within the cylinder 222 carried by the valve member 2I6. Obviously, other types of pressure control mechanism may be employed for the.. purpose intended, wherein pressure from the pump PV may be used -to close the byfpass between the outlet and inlet pipes of the conveyor loperating pump PI.

In the flow diagram of Fig. 26 I have included a control valve 226 in the pipe line 223 so that the rate of response of the pressure control valve 2M may be governed to some extent. There is also included in the fluid flow circuit check valves 221 and 228, the former being in the line interconnecting the valves NV, MV and GV, the latter being in the feed line between the pump PV and the valve MV. y

vAlthbugh the present invention has been described in connection with the detailsI of specific embodiments thereof, it is not intended that such details shall be regarded as limitations upon the scope of the invention, except in so far a included in the accompanying claims.

' I claim:

l. In a'barrel washing machine,an .endless conveyor, said conveyor comprising barrel supporting means located in a plane substantially l 10 from the horizontal, and adapted to support a plurality of barrels in a tilted position with their bung holes lowermost, automatic means for 1 advancing the conveyor a predetermined distance during a portion of each complete operating cycle f of said machine, a vplurality of spray nozzles, a plurality of arcuated swing pipes, said plurality of spray nozzles being mounted on said plurality of arcuated swing pipes, said plurality of arcuated pipes being'secued to a pivotally mounted feed pipe, whereby said plurality of spray nozzles and said plurality of arcuated swing pipes are movably mounted in registration with certain of the tilted barrels of said conveyor when the conveyor is at rest, and means operable to move said nozzles within the interior of said barrels and to withdraw them during the remaining portion of saidpomplete operating cycle. o v y 2. In a barrel washing machine-as described in claim l a plurality of funnel shaped members fixed .to said conveyor and adapted to be received are placed upon the conveyor 'and to locate the barrels thereupon in predetermined relationship with the conveyor.

` 3. In a barrel washing machine, lan endless conveyor, saidconveyor comprising barrelsupporting means located in a plane substantially 10 from the horizontal and adapted to support a plurality of barrels in a'tilted position with their bung holes lowermost,barrel heating, washing and rinsing means occupying, stages of equal length linearly equally spaced at intervals of one stage length along the path of movement of said con'- veyor, means for advancing the conveyor during each cycle of operatlonof the machine a distance equal to one stage length whereby the barrels on barrel heating, washing'and rinsing stages, a plurality of spray nozzles mounted on a plurality of arcuated swing pipes located at certain of the stages, said plurality of arcuated swing pipes being associated with a pivotally mounted feed pipe, said arcuated swing pipes being adapted for registration, when the conveyor is at rest, with the bung holes of barrels on the adjacent portions of said conveyor, and means operable whensaid conveyor is at rest to move said nozzles within the interior of the barrels and to withdraw them, said last named means being operably responsive to a function of said conveyor advancing means.

4. In 'a barrel washing machine, a conveyor mounted for straight line movement and adapted to support a plurality of barrels in substantially uprighty position thereupon, barrel pre-heating, washing and rinsing stages located in series array along the pathof travel of said conveyor and occupying linearly equal spaces along the path of said conveyor are advanced progressively to said conveyor travel, a movable conveyor grip, a dog on l said grip adapted to engage said conveyor during 4- movement of the grip in one direction to move the conveyor therewith, automatic means for drawing the grip, together lwith the` conveyor, a distance equal toione stage length to advance all of the barrels on said conveyor from one to the next lsucceeding of the stages and, for .returning the grip preparatory to its next conveyor draft function, means, including a pivotally mounted feed pipe and a plurality ofarcuated swing pipes and spray nozzles associated therewith, operable to internally wash and internally rinse the barrels .at certain of said stages, said swing pipes andv spray nozzles being adapted to move into close proximity to the barrels on said conveyor during 5. In a barrel washing machine, a conveyor mounted for -straight line movement and adapted to support a plurality of barrels 1n substantially upright position thereupon, barrelpre-heating,

lwashing and rinsing stages located in series array along the path'of 4travel of said conveyor, and

occupying linearly equal spaces along the path of conveyor travel, a movable conveyor grip, a

dog on said gripfadapted to engage said conveyor during movement-of the grip' in 'one Vdirection to move the conveyor therewith.,automatic means for drawing the grip, together with the conveyor,

.a distance equal to one stage length to advance all of the barrels on said conveyor from one to the next succeeding stages and for returning the grip preparatory to its next conveyor draft function, means, including a pivotally mounted feed pipe and a plurality-of arcuated swing pipes and spray nozzles associated therewith, operable to internally wash and internally rinse the barrels at certain of said stages, said swing pipes and spray nozzles being adapted to move into close proximity to the barrels on said .conveyor during the treatment of said barrels, means for actuating said pivotally mounted feed pipe, including a motor driven crank shaft operatively connected to' said feed pipe and provided with a cam, means actuated by said cam .on said motor driven crank shaft rendering the last named means inoperative during the' movement of said conveyor, 'and automatic means for decreasing the speed of said conveyor grip as it approaches either of its limits Y of travel.

6. In a barrel washing machine, nozzles for spraying a preheating fluid on said barrels, nozzles for spraying a Wasliing solution exteriorly andinteriorly of the barrels, nozzles for spraying rinse water exteriorly of the barrels, nomles for spraying rinse water interiorly of the barrels, sump reservoirs for theA preheating nomles, the

` washing nozzles'and the rinse nozzles respectively,

means for supplying hot filtered water tothe interior barrel rinsing nozzles, means for pumping the used rinse, water from the rinse reservoir'to the exterior rinsing nozzles, means for lpumping hot water from the rinse reservoir into the preheating reservoir and for pumping the water therefrom to the preheating nozzles, means for supplying the washing reservoir with the washing solution, means for pumping washing solution from the washing reservoir to the washing nozzles and means for transferring heat from the used preheating water to the illtered` water prior to its admission to said interior rinse nozzles.

7. In combination, a conveyor member mounted for movement along a fixed course of travel, conveyor vgrip meansfor-advancing said conveyor, said conveyor grip means comprising a conveyor grip carriage mounted for reciprocation along a path parallel to the movement bf saidV conveyor, hydraulic means for actuating said conveyor grip carriage, a valve for controlling saidhydraulic means, apparatus for treating articles placed upon said conveyor including a pivotally mounted feed pipe and a plurality of arcuated swing pipes and spray nozzles associated therewith, said swing I pipes and-spray nozzles being adapted to move into close proximity to the articles on said conveyor during the treatment of said articles, means for actuating said pivotally mounted feed pipe, means for operating said valve, said last named means being actuated by said means for actuating said pivotally mounted feed pipe whereby the movement of the conveyor and the functioning of the treating apparatus may bear a fixed relationship as to time.

8. In combination, a conveyor member mounted for movement along a fixed course of travel, conveyor grip means for advancing said conveyor,

' said conveyor grip` means comprising a conveyor grip carriage mounted for reciprocation along a path parallel to the movement of said conveyor,

hydraulic means for actuating said conveyor grip carriage, a valve for controlling said hydraulic means, apparatus for treating articles placed 1 upon said conveyor including a pivotally mounted feedl pipe and a pluralityof arcuated'swing pipes and spray nozzles associated therewith, said swing pipes and spray nozzles adapted to move into close proximity to the articles on said conveyor during plurality of barrels in a tilted bung holes lowermost, barrel heating, washing and the treatment of said articles, means for actuating said pivotally mountedfeed pipe including a motor driven crank shaft operatively connectedl to said feed pipe and provided with a cam, and electrically operated means forl operating said valve including an electrical circuit having a switch in series therewith, said switch being actuated by said cam on "said crank shaft and by said' conveyorgrip carriage, whereby the movement of the conveyor-and the functioning of the treating apparatus may bear a. to time.

9. In combination, a conveyor member mounted for movement along a fixed course of travel, coniixed relationship as veyor grip means for advancing said conveyor,

said conveyor grip means comprising a conveyor grip carriage mounted for lreciprocating along a path parallel to the' movement of said conveyor,

hydraulic means for actuating said conveyor grip carriage, a valve for controlling said hydraulic means, apparatus for treating articles placed upon said conveyor including a pivotally mounted feed pipe and a plurality of arcuated swing pipes and spray nozzles associated therewith, said swing /pipes and spray nozzles being adapted to move into close proximity to the articles on said con.- veyor during the treatment of said articles, means for actuating said pivotally mounted feed-pipe,

conveyor, said conveyor comprising barrel supvporting means located in a plane substantially from the horizontal, said barrel supporting means being adapted to support a plurality of barrels with their longitudinal axes substantially 10 from the vertical plane and with their bung holes located at the lowermost portion, conveyor gripping means for advancing the conveyor a predetermined distance during a complete cycle of the operation of said conveyor, said conveyor gripping means including a conveyor grip carriage mounted for reciprocation along a path parallel to the movement of said conveyor, barrel treating stages spaced along the path of said conveyor, housing means at each of said barrelv treating stages, a plurality of spray nozzles mounted on a plurality of arcuated swing pipes, said arcuated swing pipes being secured to a pivotally mounted feed pipe located at certain of said stages said plurality of spray nozzles and said arcuate swing pipes being adapted for registration when the conveyor is at rest with the bung holes of the barrels on the adjacent portion vof said conveyor, and means operable when saidconveyor is at rest to move said nozzles and arcuated swing pipes within the interior of said b arrels and to withdraw them, said last namedA means being operably responsive to a functioning of said conveyor advancing means.` f l 11. In a barrel' washing machine, an endless conveyor, said conveyor comprising barrel supporting means located in a planesubstantially 10 from the horizontal and adapted to support a position with their rinsing means occupying stages of equal length linearly equally spaced at intervals of one stage veyor,

' e'ach cycle of operation of the machine a distance l equal to one stage length whereby the barrels on length along the path of movement of said conmeans foradvancing the conveyor during nozzles mounted on a'pluralityof arcuated swing pipes located at certain of the. stages, said plurality of arcuated swing pipes being associated` with a pivotally mounted feed pipe,4said arcuated swing pipes being adapted for registration when 'the conveyor is at rest, with the bung holes of barrels on the adjacent portions o! said conveyor, and means operable when said conveyor is at rest -to move said nozzles within the interior of the barrels and to withdraw them, said last named means being operably responsive to a function of said conveyor advancing means.

CARL J. BCHROEDER- 

